import axios from "axios";
import { Message, MessageBox } from "element-ui";
import store from "../store";
import { getToken } from "@/utils/auth";
import { getCookie } from "@/utils/support";

// 创建axios实例
const service = axios.create({
  baseURL: process.env.BASE_API, // api的base_url
  timeout: 300000 // 请求超时时间
});

// request拦截器
service.interceptors.request.use(
  config => {
    if (store.getters.token) {
      config.headers["loginName"] = getCookie("username"); //让每个请求携带账号
      config.headers["Authorization"] = getToken(); // 让每个请求携带自定义token 请根据实际情况自行修改
    }
    //过滤掉为null数据
    try {
      if (config.method === 'post' && config.data && Object.keys(config.data).length ) {
        // 如果是普通对象
        if (typeof config.data === 'object') {
          const newData = {};
          Object.keys(config.data).forEach(key => {
            const value = config.data[key];
            // 过滤掉值为null或undefined的参数
            if (value !== null && value !== undefined) {
              newData[key] = value;
            }
          });
          config.data = newData;
        }
      }
      return config;
    } catch (e) {
      return config;
    }
    
  },
  error => {
    // Do something with request error
    console.log(error); // for debug
    Promise.reject(error);
  }
);

// respone拦截器
service.interceptors.response.use(
  response => {
    /**
     * code为非200是抛错 可结合自己业务进行修改
     */
    const res = response.data;
    /**
     * 适配导出Excel文件流的情况
     */
    if (response.status == 200 && res.code == null) {
      return response;
    }
    // 401:未登录;
    if (res.code === 401) {
      MessageBox.confirm(
        "你已被登出，可以取消继续留在该页面，或者重新登录",
        "确定登出",
        {
          confirmButtonText: "重新登录",
          cancelButtonText: "取消",
          type: "warning"
        }
      ).then(() => {
        store.dispatch("FedLogOut").then(() => {
          location.reload(); // 为了重新实例化vue-router对象 避免bug
        });
      });
    } else if (res.code !== 200) {
      Message({
        message: res.message,
        type: "error"
      });
      return response;
      // return Promise.reject("error");
    }
    return response.data;
  },
  error => {
    console.log("err" + error); // for debug
    Message({
      message: error.message,
      type: "error",
      duration: 3 * 1000
    });
    return Promise.reject(error);
  }
);

export default service;
